1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/expr/bitfield3.C b/gcc/testsuite/g++.dg/expr/bitfield3.C
new file mode 100644
index 000000000..3221263a9
--- /dev/null
+++ b/gcc/testsuite/g++.dg/expr/bitfield3.C
@@ -0,0 +1,12 @@
+// PR c++/30274
+
+struct S {
+  bool x : 4;
+};
+
+S s;
+
+void f() {
+  s.x--; // { dg-error "Boolean expression" }
+  --s.x; // { dg-error "Boolean expression" }
+}